from köln deutz
The tickets for the trip are called "Preisstufe K". They cost 1,20 Euro, you should have coins handy.
No matter on which rail you are, go downstairs where you see the blue "U" signs:
Once you're gone down the stairs, turn right and walk down the corridor until you see next stairs leading down to the subway rails. Go down where the photo indicates:
Now you take tramline no.1 (direction: Weiden) or tramline no.9 (direction: Sülz). Get out already on the next stop called Deutzer Freiheit. There, go downstairs as you can see here:
Now turn left and go the next but one stairs at the right hand, leading to the surface:
Now head straight to the overground tram rails, and take the right one, as you can see here:
At the third station you should get out at the stop named Poller Kirchweg. From there, follow the Evoke signs.